In ancient mythology, the goddess Pandora opened the "magic box" out of curiosity and let the devil and genie run out. She hurriedly closed the "magic box ", but put the spirit of hope (spiritof)
Hope) left in the box. See:
August 8 J. keisler basic calculus section 3.8 The nature of continuous functions is successfully uploaded to the Internet. For the study and processing of infinite calculus, the infinitely small and infinite (Super integer) are the seeds of hope. That is to say, the super integer h and K (as the hope genie) ran out of Pandora's "magic box. What is the use of hyperintegers?
Looking back, in 1948, the American mathematician edwinhewitt (1920-1999) strictly defined the super integer for the first time. At that time, he was only 28 years old. At present, most of China's post-80s "xiaomaotou" is still in the entrepreneurial stage, buying a house to build a house. Creation is not possible. Searching the Internet in China, the "super integer" is almost unattended, And the calculus pocket e-book has become a pioneer in the road. It is all nonsense to carry out Calculus Teaching reform without the help of an extra integer. For more information, see section 4.1 of pocket e-books. Here, "Unlimited Liman and" use an extra integer to separate the integral ranges [a, B].
In August 18, calculus pocket e-books entered the Comprehensive Cleaning stage to clear all text flaws and welcome the beginning of the new school year. We need help. We will remember all people of insight (or enterprise) who provide help ). Thank you for your continued attention.